จำนวน Repository ( 17 )

การศึกษาความเป็นไปได้ในการผลิตฝากระโปรงรถยนต์จากแกลบและผักตบชวาเพื่อรองรับการชนคนเดินเท้า
การศึกษาความเป็นไปได้ในการผลิตฝากระโปรงรถยนต์จากแกลบและผักตบชวาเพื่อรองรับการชนคนเดินเท้า

Recently the Thai industry has continually grown up and also plays a role to economic growth in the country which affects the many of automotive components to be in the market. While the degeneration and waste of automotive components had increased as well. Therefore a car hood is one of the automotive parts which damage from the accident. Consequently the researchers have created a prototype material to develop into the car hood which made from the husk and water hyacinth. The random mixture of water hyacinth and husk was attempted to more than 3 ingredients. By forming a flat plate with thickness between 1 to 3 millimeters was used as prototype of the car hood material in this research. Thus the mechanical properties such as compressing and bending test were attempted to by the universal testing machine. The results showed that using resin as a binder material (Reinforced resin by water hyacinth and husk) will have the less ability of energy absorption. While using polymers as a binder (Polymer resin by water hyacinth and husk) will have the better ability of energy absorption. The properly mixture between water hyacinth and husk referred to the energy absorbing properties is 50:50 because the least linear stiffness is 1.087 N/mm. Besides the ability of energy absorption is 1612444 J/m3 which is property of this ingredient can reduce the severity of the impact in the event of pedestrians collision in the best.

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การออกแบบรูปทรงแม่แบบเครื่องจักสานผักตบชวาสู่ผลิตภัณฑ์สร้างสรรค์แนวคิดเอกลักษณ์ท้องถิ่น
การออกแบบรูปทรงแม่แบบเครื่องจักสานผักตบชวาสู่ผลิตภัณฑ์สร้างสรรค์แนวคิดเอกลักษณ์ท้องถิ่น

The objective of this study 1) To study the shape of the template from the process of making basketry 2) To design a template hyacinth wicker products creative products 3) To test the woven pattern of water hyacinth wicker 4) To create a unique product that is more valuable to the local wisdom and value. Consumerism toward the development of water hyacinth wicker patterns. By specifying a sample group of 57 people. The tools used in the research consisted of the satisfaction questionnaire on the template pattern water hyacinth weave basketry to local creative concept product. The results of the design of the water hyacinth wicker pattern design to the product of local identity concept found that the design shape can be a shape that has a concept as a creative product. Form 1 wicker-shaped pattern template from water hyacinth leaves The product is a chair with an average of 4.58 Form 2 template oval shaped wicker basket shape. The product was a basket of legs with an average of 4.48 Form 3 basket shaped shape from the bowl shape the product received the basket has a value of 4.22. All 3 forms that can be developed in the form of products that can satisfy level most satisfactory shape is the molds for Basketry 1. The product is a chair that is beautiful the proportion of products is suitable for use and strong products are local and creative in the process of water hyacinth wicker requires a template for forming. The original material used to make the wicker template is plywood or foam material. During the study phase the researcher invented the material for making water hyacinth woven basket template using rubber water mixed with plastic watercolor foamed foam templates are used for easy handling and longer durability.

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การพัฒนาบรรจุภัณฑ์เพื่อสิ่งแวดล้อมจากวัสดุคอมโพสิตเส้นใยผักตบชวา แกลบ และใยมะพร้าว สำหรับรักษาอุณหภูมิ
การพัฒนาบรรจุภัณฑ์เพื่อสิ่งแวดล้อมจากวัสดุคอมโพสิตเส้นใยผักตบชวา แกลบ และใยมะพร้าว สำหรับรักษาอุณหภูมิ

The research was to develop environmental packaging from composite materials hyacinth fiber rice husk and coconut fiber for temperature preservation to replace the use of foam packaging that cannot be degraded naturally. In the composite materials water hyacinth fiber rice husk and coconut fiber at the ratios 7: 1: 2 1 : 1 : 2 and 1: 1: 1 were extruded by heat using isocyanate glue as a solder and testing the physical and biological properties of composite materials as fiberboard. For testing of temperature preservation of the bio packaging heat transfer test to obtain the bio-packaging for the environment the composite materials of fiber water hyacinth rice husk and coconut fiber at the ratio of 7 : 1 : 2 was the most appropriate type. Since it had a density of 0.7 grams per cubic centimeter strength of 26.76 MPa moisture content of 3.8 percent ages and swelling of 26.63 percent ages. In dry condition at room temperature it could store heat for 2 hours and could retain the cold temperature as shown for the temperatures rising from 4 to 30.7 degree Celsius within 2 hours. This research therefore presents a new alternative method of natural fiber composite materials application for temperature preservation in order to reduce the use of foam containers and increase cost value to natural bio waste materials.

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การเตรียมกระดาษคราฟท์จากผักตบชวา ใบสับปะรด และกาบกล้วย
การเตรียมกระดาษคราฟท์จากผักตบชวา ใบสับปะรด และกาบกล้วย

This research had a main purpose for studying the utilization of water hyacinth as the key component of paper production mixed with the agricultural waste as pineapple leaves and leaf sheath of banana tree. The paper pulps were prepared from 5 g/l NaOH at 90-95oC for 3 hours then bleaching with 5 g/l Hydrogen peroxide at 90-95oC for 30 minutes. The whole pulps were detached improvement with 5g/l Acramine 3187 before paper establishment production. Finally the strength of obtaining papers was consideration and competition to any craft paper type. As the results the appropriate ratio of paper was 70% water hyacinth (stem) 10% pineapple leaves and 20% leaf sheath of banana tree. It had 31.19 kN/m2 for bursting strength tearing strength as 309.17 mN and 0.49 mm thickness. The basis weight was 183±5 g/m2. The achieved paper was equivalent as KI craft paper. It was presented for packaging boxes and other procedures.

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การดูดซับทางชีวภาพสีย้อมโรดามีน บีด้วยรากผักตบชวาดัดแปร
การดูดซับทางชีวภาพสีย้อมโรดามีน บีด้วยรากผักตบชวาดัดแปร

The biosorption of Rhodamine B using modified water hyacinth roots was studied. The adsorption experiments were conducted in a batch setup. Parameters affecting the adsorption of Rhodamine B including pH of a solution adsorption time adsorbent dose and dyes concentration were investigated. With the 80 mg/L Rhodamine B solution of pH 6.0 adsorption time of 60 min and 0.10 g of modified water hyacinth roots the kinetic models pseudo-first order and pseudo-second order kinetic model were applied to examine the kinetic adsorption. The adsorption kinetic data correlates with pseudo-second order kinetic model. The Langmuir and Freundlich adsorption models were applied to describe the isotherms and isotherm constants. Adsorption isotherm data correlates with Langmuir adsorption model. The maximum adsorption capacity of modified water hyacinth roots for Rhodamine B was found to be 63 mg/g

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